215122565252 has 48 divisors (see below), whose sum is σ = 436925274240. Its totient is φ = 90765556992.

The previous prime is 215122565237. The next prime is 215122565261. The reversal of 215122565252 is 252565221512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3218024 + ... + 3284192.

It is an arithmetic number, because the mean of its divisors is an integer number (9102609880).

Almost surely, 2^215122565252 is an apocalyptic number.

It is an amenable number.

215122565252 is an abundant number, since it is smaller than the sum of its proper divisors (221802708988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215122565252 is a wasteful number, since it uses less digits than its factorization.

215122565252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67980 (or 67978 counting only the distinct ones).

The product of its digits is 120000, while the sum is 38.

Adding to 215122565252 its reverse (252565221512), we get a palindrome (467687786764).

The spelling of 215122565252 in words is "two hundred fifteen billion, one hundred twenty-two million, five hundred sixty-five thousand, two hundred fifty-two".